EXHIBIT 11 MINNESOTA MINING AND MANUFACTURING COMPANY AND SUBSIDIARIES EARNINGS PER SHARE OF COMMON STOCK Three months ended Six months ended June 30 June 30 1994 1993 1994 1993 ------------ ------------ ------------ ------------ Net income (millions) $343 $331 $649 $661 - -------------------------------------------------------------------------------- Primary earnings per share: Earnings per share $.81 $.76 $1.53 $1.51 Weighted average number of common shares outstanding 422,949,559 436,360,117 425,015,945 436,946,431 - -------------------------------------------------------------------------------- Fully diluted earnings per share: (1) Earnings per share $.81 $.75 $1.52 $1.50 Weighted average number of common shares outstanding 422,949,559 436,360,117 425,015,945 436,946,431 Common equivalent shares 2,692,411 4,960,108 3,226,278 4,429,070 ----------- ----------- ----------- ----------- Average number of common shares and equivalents outstanding 425,641,970 441,320,225 428,242,223 441,375,501 - -------------------------------------------------------------------------------- Share and per-share data reflect the two-for-one stock split effective March 15, 1994. Primary earnings per share is computed by dividing net income by the weighted average number of common shares outstanding for each period. The calculation excludes the effect of common equivalent shares resulting from stock options using the treasury stock method as the effect would not be material. Fully diluted earnings per share is computed based on the weighted average number of common shares and common equivalent shares outstanding for each period. (1) This calculation is submitted in accordance with Regulation S-K Item 601(b)(11) although not required by APB Opinion No. 15 because it results in dilution of less than 3%.